Signaling apparatus.



H. C. vDAVIS L E. D. CHADWICK. SIGNALING APPARATUS.'

APPLICATION FILED IUNE15, 1909.

l ,138,5413. y Patented May 4, 1915.

,citizen of the United p I York, and EvnnETT D.

, Vand `useful Improvements in TurnTnD sTaTss PATENT clarion HERBERT c'.Davis, or NEW YORK, n. Y., AND EVERETT D. GHADWICK, 0F

WINCHESTER,

To all whom it may concern lBe it known that we, HERBERT C. Davis, aStates, residing at New York, in the county and State of New Cnavwicn, acitizen of the United States, residing at'VVinches .,ter, in the countyof Middlesex and State of have `invented certain new SignalingApiMassachuse tts',

7,10 paratus, oit which the' following is a specilication.

I Ourinvention relates to apparatus for au- ,tomatically giving an alarmor other signal j,.in certain contingencies, and is particularlyapplicable to` that class of apparatus which ,lsuused fordeterminingwhether night man operates, as 'a part of his ,watchnren in factoriesand `the like give proper attention to their duties. As adapted aandemployed for thispurpose, our inven* tion `provides `an, .arrangementwhich will i,y'automatically give one or more signals at a predeterminedtime or at periodic intervals unless, during a limited period preceding`such time or each such interval, the watchduty, a mechl anism wherebythe giving of suclrsignal or signals will be prevented, so that thegiving Vof a signal will showthat the watchman has neglected his dutycall attention to that fact.

Our invention may be embodied in or adapted for use in connection with avariety of apparatusof the character above referred to, and is hereinillustrated a i Yatchmans clock of that type which is `,custoniarilylocated in the office of a` factory or the like and is provided withapush button intended to be operated by the watch.- man at the beginningof each of his periodic lrounds through the factory, `the result oit`each operation of the push button being that 1 the time o t'doing so isregistered by means of 'appropriate mechanism contained in the clockcase.

. In the accompanying drawings, which are largely diagrammatic incharacter' and are not intended to illustrate all the detalls ofcommercial construction, Figure lis a front elevation, partly brokenaway, of a watchina-ns clock embodying our invention, and

Fig. 2 is a detail n iodiication. i

eferringto Fig:

es 'al watchman p me.dialxgritiinie keeping mechanism view illustratinga slight lint the dra-wings, 2 in Specification of Letters Patent.

and may be utilized to,l

. mechanism by as embodied in .clock comprisih'gjthe Massacnusmrs.sIGNALINe firmamos.

PatentcdMay 4l, 1915.

4Applcatimifiled J' une 15, 1909. Serial No. `50,-3`22.` i

record of the time of doing so is made `upon a rotating disk, which islocated at?.y v In practice the clock case is kept locked and cannot beopened wit-hout recording the time ot' doing so upon the disk, whichdisk, and the details of the mechanism for making the record upon it,are not illustrated in the drawings, as they may be of the usual or anysuitable construction..

In connection with the parts just referred to', which are not originalwith us, we provide a signaling mechanism comprising, in the particularconstruction illustrated, a disk 8 which is continuously rotated bytheclock mechanism and makes one complete rotation per hour, assuming thatthe watchman is supposed to make hourly rounds .of the factory in whichthe clock is installed. F or lconvenience of illustration this disk 8 isshown as mounted upon the arbor which carries the minute hand of theclock. The signals are preferably audible signals given by means of anelectrically@operated bell or the like, and in such case the disk 8, orsuch portion thereof as may be necessary, is made 'ot metal, beinginsulated from the clock means ot' a hub 9 or" hard rrubber or othersuitable material.

Adjacent to the disk 8 are located one o1.' more contact terminals,according to the number-of dil'erent signals to be given by theapparatus. In the drawings we' have shown two such contact terminals,which are illustrated at l0 and l1 respectively, being severally mountedupon the clock case in fixed position and insulated therefrom. A

"Contact projection l2 is formed or otherwise Provision `is made forholding the terminal v lnout lofpontact with the dislnf, for `eX- ampleby providing the arm 14 with a shoulila der 16 adapted? to be engaged bythe notched end 17 of a pivoted, spring-actuated latch 18 when the lowerend of said arm 14 is suiiiciently moved to the left from the positionshown in\ Fig. 1. The opposite end of the latch 18 is located inposition to be moved outward by a suitable projection carried by thedisk 8, the contact projection 12 being conveniently employed for thispurpose, and Whenever such movement of the latch 18 takes placeA theterminal 13 is VVimmediately pressed into contact with the disk 8 bymeans of the spring 15. The terminal 13, arm 14 and latch 18 constitutewhat may be ycalled an automatic setting device, by means of which thesignal-operating circuit is put in condition to be subsequently,`closed, as hereinafter described.

Circuit wires 19v and 20 extend from the spring 15 and terminal 10respectively to a battery 21, and an alarm device, such for eX- ample asan electric bell 22, is included in this circuit. from the terminal l1through'an alarm-giving device to the circuit wire 20 between the bell22 yand the battery 21, and as shown in Fig. 1 this alarm-giving deviceconsists of a relay 24 included in the circuit wire 28 and itselfadapted when the current passes through it to close a supplementary oroutside circuit 25 which includes another electric bell 26. The bell 22isintended to be placed within or upon the clock itself, or at any otherconvenient place within the factoryin which the clock is located, whilethe bell 26 is likely to. be located at some more distant point, forwhich reason the employment of the relay 24 and the outside circuithaving its own battery desirable. rlhis bell 26 may be placed upon theoutside of the factory building which contains the clock, or the circuitwhich operates this bell may be extended to the house 'of thesuperintendnt or owner.

The 'arm 14 is so connected to'the push `button5 that when the latter ispushed inward said arm is moved into position to be late hed by thelatch 18, the contact between the terminal 13 and the disk 8 beingthereby broken. In the arrangement shown in the drawings this isaccomplished by means of a lever 27 pivotally supported upon the clockcase and forked at its lower end tostraddle the rod 4 which carries thepush button 5 at its upper end; said rod 4 being provided with pins28ibetween which the lower end of f the lever 27 passes, so that theinward and outward movements of the rod 4 will cause said lever to rocken its pivot, and the upperend of the lever 27 being located just infront of the lower end of the arm 14, as V.shown in Fig. 1, j

As thus constructed, the operation is as ',llowsaWhen the parts are inthe position 's own in yFig. 1, the projection 12 has just Anothercircuit wire 23 leads passed the latch 18 and by turning 'said latch onits pivot has released thc arm 14, and the contact terminal 13 carriedby the latter-arm has been pressed by the spring 15 into Contact withthel outer edge of the disk 8, so that the electric circuit between thedisk AS and the battery 21 through thc terminal 13,

arm 'il and spring 15 is complete. After the parts 'have assumed thisposition a certain interval will elapse, depending upon the relativeposition ofthe latch 18 and the terminal 10, during which'interval thewatchmanis supposed as a part of his regular duty to press the pushbutton inward and thereby register the time of doing so upon therecording disk, this being the time atA .breaking the contact betweenthe terminal 13 and the disk 8. At the expiration of the interval abovereferred to the projection 12 will make contact with the spring terminal10, and if the watchman has duly operated the push button 5 no alarmwill be given, since the circuit through the bell'22 will be broken atthe`terminal 13. 1f, however, the watchman has failed to operate thepush l,.button 5 the terminal 13 'will remain in contact with the disk8, and therefore, as soon 'as the projection 12 touches the terminal 10,the circuit through the bell 22 will be closed and said bell will ring,thus drawing the attention of the watchman to his failure to operate thepush button 5. 1f he now operates the push button1 the arin- 14 will bemoved to the left and latchcd, and the circuit will thereby be broken,but if he fails to Ado this within another interval depending upon thedistance between the spring terminals 10 and 11, then as soon as theprojection 12 touches the terminal 11 the circuit will be closed throughthe relay 24 and said relay willt-hereupon close the circuit through thebell 26', thus giving a supplementary alarm by means ot the latter bell.This alarm will continue to be given as long as the projection12 remainsin contact with the terminal ,11, and this terminal is purposelymadelong nal 1l, and no `further alariii can be given, i untilsaidprojection reaches the terminal l0.

will stop ringing. This lie-ll will also stop ringing in any event assoon as the projection 1:2 passes out of Contact with the terini-Itwvill be seen that the arni llwill always rbe unlatclied at thebeginning ot the period Ldiiring which the watchman is "operate the pushbutton 5,

supposed to so that each oi'ieration of the push button inust take placejwriiliin the required interval in order to yvprevent `the giving ot" analarin, regardless i or ythe operation of tliepush button atanvmechanism in the giving of itliertiineg in other words, itis impossibleforv the watchman to operate or set the any way which will prevent analarm unless he does this 'during the intended period above referred to.

- `'ln the modified arrangement shown in irig. 2 the arm land latch 1,8are replaced i i by a single pivoted arm :29, one end ol which `visarranged to be operated by the projection lf2 i and the other endspringcontact terminal of which carries a 30, said arm 29 being actuatedby theupper endof the lever `.-27 as above described. A sprinr 3lmountif, ed on an insulated support an ,to the battery connected circuitis provided with depressions adaptedI to cooperate with a Apin 32 Inojecting laterally frointhe arin 29 in such manner that when theprojection l2 `throws the upporcndof the arin to the i ,left, therebypressing the terminal 30 into contact with the disk 8, the pin 32 willbe wlocated/in the left'hand depression in the spring 3l, While when thelower end of the arml is forced lto the lever 27 the the left by therocking pin 32 will enter the fright hand depression in the spring,which L'either by means of lever 27 'or thus serves to hold said arm ineither of the positions above referred tobut permits it to lic easilyshifted' to the other rposition `the `circuit when closed passes arin29,. pin 32 and spring 3l, the construction and arrangement V-fottlieremaining parts being as shown in ie arrangement shown in'lfi is soine-`what siinpler than that shown in "Fig. l, but

ij' ein seine nifty be less .desirablel tor this ,rczison, that whiletli'oupper end ot the arin 29 is resting upon the projection l2 the pushbuttonr ficaiinot'bc operated," because the uppercnd `ofthe Alever 27will be prevent-ed by the lower end oi the aini QE) ifi-oni moving tothe left, so thatI 'For a short period it will be impossible to recordupon the/disk an attempted operation oli the pushV button 5.

W ith the construction shown in Fig. l, how-` ever, the lpush button 5can be operated and a record made upon the disk at any time.

It will be understood that the location of theu latch 18 and thecontactiterininals 10 Y`bc tripped by means f ofthe projection 12. -lnthis arrangement ually-operativc means scribed.

and 11 will be determined in accordance with the intervals which it isdesired to allow to the watchman for opi-iratiiigr the push button,which intervals may be varied as desired. For example, assumingr thatthe watchman is supposed to start on a round at the beginning oit eachhour, as is customary, the' latch 18 may be so located `as to at tenminutes before the hour, the terminal l0 ,may be so locited 'as to makecontact with the projectioiivl at five minutes before the hour, and theterminal 1l may be so located as to make its initial contact with theprojection l2 on the hour, but the tiines of tripping .the hitch andinaking the electrical contacts, and also the ninn-l ber of thesecontacts, may be varied as delsired, and any suitable form of device forgiving an alai'in or other used andqinay be located at whatever pointinay be thought desirable. It will be` observed that theparts l0, ll, 1Sand 18 re?v main wholly out ol contact with the disk '8 and itsprojection l2 throughout greater part of the period o'f rotation of thedisk, so that the frictional resistance to the rotasignal inay be tionofthe disk and therefore the additional il cally 'resetting saidcircuit-breaking means at the beginning of said interval and for'closing the signaling circuit at said contact terminal at' the end 'otsaid interval.

2.-An vapparatus of the character described', comprising an electricsignalingl circuit which is normally open at two differ-` ent',poi'iitfs,l pcriodicall 7-operating ineaiistor automatically' closingthe. circuit at said points lat thc beginning and end 'of apredetermined interval, respectively, aiidiinair. toi.' breaking the circiiitdui ing said interi l. y A

3.` An apparatus of the character deciicuit ha ving two normally-operibranches and signaling mechanisms included in said. branchesrespectively, the common' portion of said .circuit being normally openabra;

different point, periodi cally-operating ine-ans for automaticallclosinor said circuit at the i h n a 1 latter point and i'or tli'ereaterclosing the branch circuits in succession at the ends ot predeterminedintervals; and manuallycomprising an. electric signaling operative meansfor opening the common portion of said circuit during said intervals.

4. The combination with Aa Watchmans clock of an electric signalingcircuit, said circuit being normally open at two different points, meansoperated by the clock mechanism for periodically closing the circuit atsaid points successivelygand a device adapted to be manually operatedfrom the eX- terior of the clock for breaking said circuit during theintervening period.

5. The combination with a Watchmans clock of a normally-open electricsignaling circuit having two distant contact terminals in 'seriestherein, means operated by the clock mechanism ior closing the, circuitthrough said terminals successively at periodic intervals, and meansoperative from the eX- terior of the clock for breaking the circuitthrough one of the terminals prior to the closing of the circuit throughthe other terminal. v

6. In a Watchmans clock, the combination with a time mechanism, and arecording mechanism adapted to be operated from the exterior of theclock case, of a signaling mechanism arranged to be operatedby the timemechanism at periodic intervals, a setting device therefor, said settingdevice being operated by said time mechanism prior to the giving of a.signal, and connections between the recording mechanism and the settingdevice for operating thlatter to prevent the giving of a signal. l

7. An apparatus of the character described, comprising a disk providedwith a contact projection and means for rotating the same, one or morecontact terminals located in position to be enga-ged by said projectionas the disk rotates, an electric signaling circuit including said disk,projec tion and terminals, a supplementary contact` terminal included insaid circuit and means tending to hold the same in contact With saiddisk, means for moving the latter terminal out of contact with the disk,a latch to hold the latter terminal out of contact with the disk, andmeans operated by the rotation of the diskfor tripping said latch;

8. An apparatus of the character dei scribed, comprising a rotating diskhaving a Contact projection, one or more contact` terminals located inthe path of said projection, a 'supplementary contact terminal movableinto and out of Contact with the to the engagement of said projectionWith the irst-mentioned contact terminal or terminals, and an electricsignaling circuit leading through said contact terminals, prof jectionand disk.

9. In a Watchmans clock, the combinaion with a time mechanism, arecording mecha nism, and a push button for operating the same, of adisk continuously rotatedby the clock mechanism and having a contactprojection, one or more contact terminals located in the path of saidprojection, a supplementary contact terminal and vmeans tending to movethe same into contact with the disk, connections between said pushbutton and supplementary terminal to move the latter out of contact Withthe disk, a latch to hold the latter contact terminal in such po*sition, means operated by the rotation of vthe disk for tripping saidlatch, and an electric signaling circuit leading through said contactterminals, disk and contact projection.

10. In a Watchmans clock, the combination `with a time mechanism, arecording mechanism, and a push button for operating said recordingmechanism, of a disk rotated by the clock mechanism and having a contactprojection, two contact terminals located in position to be engagedsuccessively by said projection when the disk rotates, a

supplementary contact terminal and means n for pressing the same against`the disk, a latch to hold the latterterminal Iout of contact with thedisk, connections between said supplementary terminal and the pushbuttonfor moving the former into latching position, an electric signalingcircuit connecting the supplementary contact terminal with each of theotherV contact terminals, andv means carried by the diskfor trippingsaid l latch prior tothe closing of the circuit',

through the first contact terminal. n

In testimonv whereof, We have hereunto subscribed our names thiseleventh'ldw4 of` "f J une, 1909.

HERBERT C. DAVIS.

EVERETT D. CHADWICK'. Witnesses: v v

MARY A. .OBmuN, JOSEPH T. BRENNAN.

